package com.atguigu.gulimall.order.web;

import com.atguigu.common.exception.NoStockException;
import com.atguigu.gulimall.order.service.OrderService;
import com.atguigu.gulimall.order.vo.OrderConfirmVo;
import com.atguigu.gulimall.order.vo.OrderSubmitVo;
import com.atguigu.gulimall.order.vo.SubmitOrderResponseVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.concurrent.ExecutionException;

@Controller
public class OrderWebConroller {

    @Autowired
    OrderService orderService;

    /**
     * 去订单确认页
     * @param model
     * @return
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @GetMapping("/toTrade")
    public String toTrade(Model model) throws ExecutionException, InterruptedException {
        // 内容是从登录用户里获取，所以不用带过来
        OrderConfirmVo confirmVo = orderService.confirmOrder();
        // 订单确认页要显示的数据
        model.addAttribute("confirmOrder", confirmVo);
        //展示订单显示的数据
        return "confirm";
    }

    /**
     * 下单功能 以一个表单提交
     * @param vo
     * @return
     */
    @PostMapping("/submitOrder")
    public String submitOrder(OrderSubmitVo vo, Model model, RedirectAttributes redirectAttributes){
        //下单 ---创建订单，检验令牌，验金额，锁库存->1.成功到支付选择页--2.失败再回到订单确认页
        try {

            SubmitOrderResponseVo responseVo = orderService.submitOrder(vo);

            if (responseVo.getCode() == 0) {
                //下单成功
                model.addAttribute("submitOrderResp", responseVo);
                return "pay";
            } else {
                String msg = "下单失败:";
                switch (responseVo.getCode()) {
                    case 1: {
                        msg += "订单信息过期，请刷新再次提交";
                        break;
                    }
                    case 2: {
                        msg += "订单商品价格发生变化，请确认后再次提交";
                        break;
                    }
//                    case 3: {
//                        msg += "商品库存不足";
//                        break;
//                    }

                }
                redirectAttributes.addFlashAttribute("msg", msg);
                return "redirect:http://order.jiajialemall.com/toTrade";
            }
        }catch (Exception e){
            if (e instanceof NoStockException){
                String message=((NoStockException) e).getMessage();
                redirectAttributes.addFlashAttribute("msg", message);
            }
            return "redirect:http://order.jiajialemall.com/toTrade";
        }
    }
}
